change css style of element javascript code example
Example 1: how to change style of an element using javascript
<html>
<body>
<p id="p2">Hello World!</p>
<script>
document.getElementById("p2").style.color = "blue";
</script>
<p>The paragraph above was changed by a script.</p>
</body>
</html>
Example 2: js add css style to element
// Create our stylesheet
var style = document.createElement('style');
style.innerHTML =
'.some-element {' +
'color: purple;' +
'background-color: #e5e5e5;' +
'height: 150px;' +
'}';
// Get the first script tag
var ref = document.querySelector('script');
// Insert our new styles before the first script tag
ref.parentNode.insertBefore(style, ref);